Photocurable compositions
US4284485A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1979 |
| Grant date | Aug 18, 1981 |
| Priority date | — |
| Expiry date | Jul 5, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The use of photo-initiators of the formula I or II ##STR1## in which n is 1 or 2, Ar is a monovalent or divalent aromatic radical, X is a tertiary amino group, a hydroxyl or ether group or a siloxy group, R.sup.1 and R.sup.2 are alkyl, substituted alkyl, alkenyl, cycloalkyl or phenylalkyl or together are alkylene or oxa- or aza-alkylene and R.sup.3 is a direct bond or a divalent aliphatic, cycloaliphatic or aromatic radical, in combination with light stabilizers from the category of the polyalkylpiperidine derivatives in the photopolymerization of ethylenically unsaturated compounds results in polymers with high stability to light and low yellowing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.